"Overnight it will have been properly searched with every piece of technology that the Metropolitan Police have. The drains will be searched. There will be people on rooftops of Buckingham Palace with binoculars," said Davies.

As Trent spoke to Davies, who should pass by but Prince Charles himself. He was riding in a brand new bulletproof Jaguar, with armed bodyguards following in the Range Rover behind him.

Anarchist groups attacked Prince Charles's royal Rolls Royce last December, flinging paint and breaking windows, giving the Prince and Camilla the shock of their lives.

Now British authorities are doing everything in their power so nothing like that will ruin the wedding the whole world will be watching.